$ git clone -n https://src.fedoraproject.org/rpms/golang-github-mroach-rom64.git /var/lib/mock/f40-build-781701-131794/root/chroot_tmpdir/scmroot/golang-github-mroach-rom64
Cloning into '/var/lib/mock/f40-build-781701-131794/root/chroot_tmpdir/scmroot/golang-github-mroach-rom64'...
$ git fetch origin e3acdec306ae745f138e7e6caf92cfe28723573d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-mroach-rom64
 * [new ref]         e3acdec306ae745f138e7e6caf92cfe28723573d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e3acdec Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild